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object E extends Z { def X = 3 implicit class X(val i: Int) { def xx = i } def Y(a: Any) = 0 object Y implicit class Y(val i: String) { def yy = i } implicit class Z(val i: Boolean) { def zz = i } } trait Z { def Z = 0 } object Test { import E._ 0.xx "".yy true.zz }